Adding a trailer hitch wiring harness.


Information and questions on GL1800 Goldwings (2001-Present)
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GWFRENCH
Posts: 3
Joined: Wed Sep 23, 2009 10:51 am
Location: jEANNETTE, PA
Motorcycle: 1986 GOLDWING 1200

Adding a trailer hitch wiring harness.

Postby GWFRENCH » Fri Mar 02, 2012 7:34 am



Having some trouble installing a wiring harness to a 2002 Goldwing 1800. After checking power supply to the tail lights, brakes and turn signals, I connected the wiring harness and ran the wiring along the left side of the bike to the battery. All of the lighting works until the harness is connected to the 4-wire relay. After connecting to the relay all the lighting works except when the brakes are applied. The 15 amp brake fuse blows. I've redone/rechecked the wiring and continually get the same results. Any suggestions? Bad relay?



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wingpilot08
Posts: 416
Joined: Wed Jan 18, 2012 4:43 pm
Location: Coatesville, PA
Motorcycle: 2008 GL1800-HPNA - 24,000+ miles
1988 Bunkhouse camping trailer
Darkside #1720

Re: Adding a trailer hitch wiring harness.

Postby wingpilot08 » Sun Mar 11, 2012 10:42 am

If everything worked prior to adding the trailer harness, then I would suspect a problem with the relay. If you try this without the trailer attached..what happens? You can get a small tester for the 4 wire trailer connecter to test it..maybe there is a short on the trailer somewhere?
08' GL1800-HPNA - Red 20,000+ miles
1988 Bunkhouse Trailer/Camper
Darkside #1720

GWFRENCH
Posts: 3
Joined: Wed Sep 23, 2009 10:51 am
Location: jEANNETTE, PA
Motorcycle: 1986 GOLDWING 1200

Re: Adding a trailer hitch wiring harness.

Postby GWFRENCH » Mon Mar 12, 2012 9:10 am

Never even got to hook up the trailer. In just testing the brake lights after installing the wiring harness and relay the brake fuse would blow out. Does it matter if the trailer end of the relay wires are still bare, but not touching, when the brake lights are tested? All the other lights work fine. I have a new relay on order.

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wingpilot08
Posts: 416
Joined: Wed Jan 18, 2012 4:43 pm
Location: Coatesville, PA
Motorcycle: 2008 GL1800-HPNA - 24,000+ miles
1988 Bunkhouse camping trailer
Darkside #1720

Re: Adding a trailer hitch wiring harness.

Postby wingpilot08 » Mon Mar 12, 2012 9:18 am

GWFRENCH wrote:Never even got to hook up the trailer. In just testing the brake lights after installing the wiring harness and relay the brake fuse would blow out. Does it matter if the trailer end of the relay wires are still bare, but not touching, when the brake lights are tested? All the other lights work fine. I have a new relay on order.


As long as the bare wire are not touching anything..shouldn't be an issue. Remove the 12v power from the relay.. it still sounds like the relay harness has an issue.
08' GL1800-HPNA - Red 20,000+ miles
1988 Bunkhouse Trailer/Camper
Darkside #1720

danw
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Joined: Sun Sep 05, 2010 3:03 pm
Location: United Kingdom
Motorcycle: 2000 GL1500SE

Re: Adding a trailer hitch wiring harness.

Postby danw » Sat Mar 31, 2012 2:43 pm

I just wired up my hitch to take a squire D850. I did not use a relay, instead I used a meter to identify which wire was which and soldered directly into each wire, apart from breaking one of the running light bulbs, everything worked first time, just took me about four hours to do the job very carefully. Ran the trailer a couple of times this month on long trips and no problems.

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themainviking
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Location: North Bay, Ontario, Canada
Motorcycle: 2009 GL1800 AD

Re: Adding a trailer hitch wiring harness.

Postby themainviking » Sat Mar 31, 2012 3:37 pm

danw wrote:I just wired up my hitch to take a squire D850. I did not use a relay, instead I used a meter to identify which wire was which and soldered directly into each wire, apart from breaking one of the running light bulbs, everything worked first time, just took me about four hours to do the job very carefully. Ran the trailer a couple of times this month on long trips and no problems.


With the GL1800 bikes, one need not cut and solder. The wiring kits are plug and play, however, I have seen bad ones like the Original Poster's. I would take the kit back where you got it and ask for a replacement. If the replacement does not act correctly, then I would look for problems - not before. All these kits are put together in China so do not expect high quality.

Viking
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GWFRENCH
Posts: 3
Joined: Wed Sep 23, 2009 10:51 am
Location: jEANNETTE, PA
Motorcycle: 1986 GOLDWING 1200

Re: Adding a trailer hitch wiring harness.

Postby GWFRENCH » Sun Apr 01, 2012 7:41 pm

Thanks for all of the great advise. I got the second relay set from KURYAKYN and this time the left turn signal didn't work. Sent that relay back and now waiting for a reply and or a new relay. I'll post the results.




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